i don't think it cuts the nav off (that would defeat the purpose of buying it)
the N2 would cut off the dvd and any aux inputs.

 

the new alpine like the iva d 900 uses a push button switch, don't remember the name but uses a push buton switch which the screen is turned on, the button is pushed or held or something which in turn allows the screen to show visual while moving. sucky way of doing things if you ask me since the screen is bad ___. they could have just used a parking brake ground like they all used too. but oh well that is why i like eclipse and clarion

 

Are you seriously going to purchase a DVD Headunit and put your car in park so you can watch a movie? I doubt it. Ground the parking wire.

 

so you are a professional but you dont know what a momentary switch is? yeah ok thats a reason not to like a screen with 1.15 million pixels there ya go professional

 

When in doubt... ground it first...

It's more difficult to ruin something by grounding it first (even accidentally) since usually ground is the common, and if anything, you're (usually) creating a dead loop. That said though you can cause problems this way even...

The best way when you're not sure, and since it can vary from brand to brand, you can always check by hooking it up right first, then finding out with a DMM with respect to ground.

Putting power though to a wire that's supposed to be grounded is an awesome way to create fireworks....

But you really shouldn't defeat the safeties in the first place.. it's illegal in many states already, and I wouldn't be surprised to see a federal law on the books soon.

 

Is there a for sure way to defeat the safety on the Alpine IVA D300??? I installed mine yesterday but want to be able to have the screen playing while in motion.

 

The N2 can be bypassed quite easily. Do you standard toggle on the brake wire, and look on the bottom of the unit. There's a small piece of foil tape. Pull that back and drop a dot of solder on the two points you can see through the hole.

 

I install as a hobby and what you do is you do not ground it at the parkingbreak you find a seperate constant ground
unlike the parkingbreak which only acts as a ground when activated aka pulled up

Thanks
Morningman